The shown domino pieces have been arranged to form a rectangle. After that the borderlines between the pieces have been removed. Reconstruct the missing lines so that every domino piece exists exactly once in the diagram.

The shown domino pieces have been arranged to form a rectangle. After that the borderlines between the pieces have been removed. Reconstruct the missing lines so that every domino piece exists exactly once in the diagram.

The shown domino pieces have been arranged to form a rectangle. After that the borderlines between the pieces have been removed. Reconstruct the missing lines so that every domino piece exists exactly once in the diagram.

Angel musicians are an integral part of Erzgebirgian Christmas traditions. In many homes there is a cloud with such wooden angels. Here is a puzzle with domino stones on which Christmas angels can be seen. The domino pieces shown at the bottom have been arranged to form a rectangle. After that the borderlines between the pieces have been removed. Reconstruct the missing lines so that every domino piece exists exactly once in the grid.